Furnace.



L. L. KNOX FURNAUE.

APPLICATION PILSD' IUIB 11', 1908.

Patented Apr. 20, 1909.

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L. L. KNOX.

' FURNACE.

APPLICATION FILED JUNE 17. 190B. Patented Apr. 20,

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WITNESSES L. L. KNOX.

FURNACE.

APPLIOATION FILED JUNE 11,1906.

Patented Apr. 20. 1909.

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WITNESSES L. L. KNOX.

FURNACE.

APPLIOATION FILED JUKE 17, 1908.

Patented Apr. 20, 1909 5 SHEETS-SHEET 4.

INVE NTOII \INITNESSES Rnw' L.L.KNOX.

FURNACE.

APPLICATION FILED Jun 17,1908.

Patentd Apr. 20. 1909.

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.INVENTOR larlv referred to, showin UNITED sTATns PATENT OFFIC LUTHER L. KNOX, 0F lil'IN AVON, PENNSYLVANIA, ASSIGNOI TO KEYSTONE FURNACE CON- STRUCTION UOMIANY,'0I" ll'lTSBliltG, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA.

FURNACE.

To all whom it may concern:

Be it known that I, Lurnnn L. Knox, of lien Avon, Allegheny county, Pennsylvania, have. invented a new and useful Improvement in Furnaces, of which the following is a full, clear, and exact description, reference helm! had to the accom anying drawings, forniiug part of this speci motion, in which Figures 1 and .2 are side elevations of a portion of ah open hearth furnace embody,

mg my invention, taken res ectively from the charging and tapping sit es; Fig. 3 is a plan view of the same partl in section, the rortion in section being t lien on the line ll-1ll of Fig. 1; Fig. 4 is central vertical section of the furnace; Figs. 5, '6, 7., 8, 9 and 10 are detail views hereinafter n ore particuw the arrangement of the cooling, boxes and the ciroulatin connectionsthereforjand Fig. I! is adet ai viewshowing a slight modification. My invention has relation to im rove ments in furnaces, and is applica lei to various kinds of furnaces; suel as open hearth furnaces, meltin furnaces, heating furnaces, etc. and is-designed-to provide means for protecting the furnace wa1ls,0r such portions thereof as may be necessary, from the more or less rapid destruction which ord inaril v takeslplaee in furnaces of this class] v To this end my invention consists in the provision of 7 means 'for water-cooling the various portions of the furnaee'walls which are most subject to the destructive action, such as the side. walls, the end wallsjthe. roof, the ports (heap-takes, etc.

The precise natnre of my inventionwill be best understood by reference to the accompanying drawings, in which 1 have-illustrated its emhmliinent in an openhearth furnace, it bein" premised, hmve ve yothat the details of em fstruelion and arrangement may be variously changed by thosesklllcd in the. art without departinp from the spirit and scope. of my invention, and that the-invention is equally applicable to other types of furnace in the general class above stated.

[11 the drawings, the numeral 2 designates the side walls of an open hearth furnace, providedln lth the usual charging doors 3, mending door 4 and ta J opening 5. i

(3 designates i re hearth of the furnace, and 7 the arehed roof:

8 is the gas port at one end of f lll illl'l iftfiP; of one or more bricks.

Specification of Letters Patent. Application filed June 1'7, 1908: Serial No. 438,967.

Patented April 20, 1900.

which is connected with the up-take 9 leadh g -from the slag pocket 10, and 11 is the air ort connected with theair uptake l2, lea ing from the sla pocket 13.

. In accordance with my invent-ion, I build into the brickwork of the furnace at the parts thereof which are to be protected by the water-cooling a plurality of hollow watercooling boxes or castings. 'These boxes may be arran eclin various ways, according to the articular nature and eonstruction'bf the urnace. drawings,- I have shown the -side walls ofthe furnace as having a pluralit indicated-M14, set into t 1e brickwork of .each of the side walls between the buck-stays l5 and extending artiall walls, aswsliown in giA, ,referably, each of these boxes or castings isof substantially the thickness of a sin le' brick, and the'boxes,

are built into the w. lone above the'other, as shown; each bOX-sbing, however,- readily removable-forienen'al should it become )burned out.- also prefer to sideof the buck-stays and etween the of these boxes,

gate at each In the furnace shown in the V throu 1h such] charging; si

or casting '16, ""wliieh ektends parallel with which,

the edgeslqf the 'door opening, and together with the-wator'cooled frames 17,

which are preferablyemployed *at these openings in accordance with my former patents, effectively revent the destruction of the adjacent brie -wor \"ert ienlly extending hoxes or castings such as shown at 18,-mny also he built into the side walls between the buck-stavs as shown in Fig. L 1 also preferably em oy the cooling lmxes rsonstlngs 19, 'whie l extend into the side Walls iunnediately helowthe skew lmek channels 20. Similar boxes or castings 21 are placed in the side. 'llSOf the air ports at each side'of the furnace, as shown. At-tho tapping side of the furnace, in addition to the short boxes 14 between the buck-stays,

longer boxes 22 are built into-the brick-work between the huelestays, qrmnhovc another,

as shown; In a sm'ula'r nthnner, the end wall of the gas up-t ake 9 is protected by m series of cooling hoxes'23 built therein, and which are preferably of the form shown in Fig. 3.

' The roof of the furnace is protected by a plurality of small boxes 24, which are built therein, each of which is preferably of the size hese boxes 24 pro erably extend through the roof arch, as character of the furnace, its size, etc., and shown in Fig. 4, and are separately removmay vary therefore in each case accordin to able from the top of the arch. these circumstances. The general nature of The arch between the gas and air ports, my invention will, however, be fully unuermay be constructed and protected in any suitstood and ap rcciated from the embodiment alllej manner. In the construction and arthereof, wluci I have illustrated and above l'flflgelnfillt shown in the present instance, described. Itwill beseen that I provide for this arch dohsists of a hollow arched casting, the water-cooling of all portions of the furwhich is built into the walls of tho furnace, nace walls whicill'arc ordinarily most subject 10 and which is formed with the skew-backs 26 to the destructive action of theheat, these supporting the refractory material 27 which being portionsfof the side walls, the furnace constitutes the roof of the gasport. The roof or arch, the, gas.up-take, and the arch casting 25 also supports the refractory ma between the gas and air ports. By effecting terial 28, which constitutes the lioor ol'the the water-cooling by means of boxes or cast 15 air port. The arch as thus constructed and ings, each of which hasa dimension equal to arranged is a permanent part of the furnace, "one or norebricks, it will be seen ,that these and is not intended for removal. castings or boxescan be readily built into the The various cooling boxes or castings can walls, as they are built up, without any outbe connected in any suitable manner to proting of brick while at the same time any box" 20 vide for proper circulation of water therecan bereadily removed without endangering throu h, the connections being provided the stabilit of the Wall. I.f desired-, a supwith etachable unions "so as to permit the porting arc such as indicated at 39 in l i .ready removal and replacement of any par; 11, may be built over each of thesejremovab e ticular box or boxes; boxes but this is ordinarily notrequired.

25 Figs. 5 and 8 show one method of connect- It will also be-seen that while the arrange I ingu the boxes 24 in the roof of thefurnace, 'ment of the boxes as shown and described each ox having a supply connection 29 with will provideforthe effectivecooiing'an'd pro- --a sup 1y pipe 30,suitable valves 31 being tectlon of the furnace walls; the incoming air provl ed in these connections. [In order to" and 'gasfonth'e furnace will notbe appreso permit the water to be shut out of any one=of cia-bly cooledi' y these boxes without affecting its circulation gI elaim: xv throu h theothers, each pair of boxes is also i l.'-'.A rgenerat' e reversing, furnace, havprovi ed with the pipe connection 32 having 'ing hollowfwatergcooled boxes or castings the valves 33 and 34. If it becomes neces gbullt'intofits'walls',at integ'valls, said boxes eopoary to remove and replace either-box of any haviu dimensions equal to those of one or pair, it will readily be seen that the valves 3 more )ricks, whereby they maybe interposed and 33 may be operated to shut out the water in the'coumesoi ricks ,formlng said walls,

from that particular box without-interferin without cutting .t 10 bricks, substantially as with'its circulation through the other'box o described. I e v 40 the pair. The boxes 24 may be rovided 2;.-'A regencratiyc revezsing'furnace havwith any suitable interiorconstruction to in: ing' olloty water-heeled removable boxes 01' sure a. proper circulation of water therein. castin s built into its walls at intervals, said Thus, asshownin Fig. 9, they may have a boxes iavin dimensions equal to those of depending partitioh wallor baffle 35 whose one or more ricks, whereby the maybe in- 45 lower edge terminates above'the bottom of te' osed in thecourses of bricks 01111111 said the box. The water entering the box wills, without cuttingthe bricks, suli s through the connection 29 at one side of this, tially as described, I

wall or baffle passes throu 'h orie end portion 3. regenerative, reversing furnace havoi'the box, and thence un emeath the wall or ing a plurality of water-cooled boxes .built tan- 50 battle into the other end portion'of the box Into its side walls,saidjboxesextending parand t0 the outlet connection. Each of these tially through the -said walls-from theputer outlet connections is preferably provided surfaces thercofland having each a thickness with an esca e ipe 24, by means of which e mil to the tliicknessof onebr more bricks, any steain w uc may form in the box may vi liercb they may bc'set into. the coursesol 66 be allowed free escapes bricks ormihg the said walls without cutting :20

Figs. 6 and 7indicate onenrethod of conor breaking the bricks, substantially as denectmg'up the boxes 14 in the side walls o[ scribed. the furnace. the'boxcs in each vertical row 4. A regeimrativc "reversing furnace hav being connected n series b the connections ing an uptake provided with a plurality of to 36 avlngeach a detachab 0 union 37. water-cooled boxes set into a wall thereof, Fig. 10 shows In detail one of the boxes 23 said boxes being each ofthe thickness of one provided with the circulating crmnections 38. or more bricks, substantially as described.

t will be understoodthat the n'ecise ar 5. A regenerative,reversing furnace havrangement a dform ol' the coo ing boxes inga ioit provided with a plurality of water- 65 l necessarily depend upon the particular cooled boxes set into a wall thereof, said 1:10

boxes each of the thickness of one or more bricks, substantially as described.

t). A regenerative, reversing furnace, having its side walls and its roof each rovided with a plurality of hollow cooling oxes or castings built into the brick work thereof between the courses of bricks; substantially as described.

7. A furnace of the class described havin an arch separating its gas and air ports, said arch consisting of a hollow arch casting built into the brick-work of the furnace and carrying skew-backs which support a refractory roof or lining for the as port and also a refractory covering whic li forms the floor of the air port; substantially as described.

8. A regenerative, reversing furnace wall composed in part of refractory bricks and in )art of hollow water-cooled boxes or castings interposed at intervals in the courses of bricks, and of the same thickness as one or more bricks, substantially as described.

9. A regenerative, reversing furnace, having its side and port walls, and its roof each provided with a plurality of hollow cooling mass or castings built into the brickwork tllOl'OOf bet-ween the courses of bricks; substantially as described.

10, A regenerative, reversing furnace, hava ing a wall thereof provided with a plurality of hollow coolin boxes or castings built irto the brick work thereof between the courses ofbricks; substantially as described,

11. In a reversing regenerative furnace having an up-take port whose outer wall is l of less thickness than the adjacent parts of i the end wall of the furnace, said outer well being formed in )art of refractory material and in part'of coo ing boxes built into the refractory material one above another; sub stantially as described.

, 12. A reversing regenerativefurnace having a plurality of uptake iorts, the outer wall 0 each of said ports ein formed in part of refractor material and in part of cooling boxes bui t into the refractory malerial one above another and the diiloreut :43- ries of cooling boxes being separated from each other by intervening wall portions wholly of refractory materials; substantially as described.

ing a plurality of uptake wall 0 each of said ports )cin formed in part of refractor material cooling boxes bui t into the refractor materia one above another, and the ifferont series of cooling b'oxcs being separated from each other by intervening wall portions wholly of refractory materials, said int0rvening portions being of reater thickness than the outer walls of t e uptake ports; substantially as described.

In testimony whereof, I have hereunto set my hand.

Geo. H. PARMELEE, H. M. Coa'wm.

13. A reversing, regenerative furnace have, orts, the outer and in part of 

